CN103358002A - Electric resistance welding equipment and method for welding end part of flat copper braided belt - Google Patents
Electric resistance welding equipment and method for welding end part of flat copper braided belt Download PDFInfo
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- CN103358002A CN103358002A CN2013102562530A CN201310256253A CN103358002A CN 103358002 A CN103358002 A CN 103358002A CN 2013102562530 A CN2013102562530 A CN 2013102562530A CN 201310256253 A CN201310256253 A CN 201310256253A CN 103358002 A CN103358002 A CN 103358002A
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Abstract
用于焊接扁平编织铜带端部的电阻焊设备及方法，包括：电阻焊机，限位器，上电极，下电极，左夹爪，右夹爪，上电极、下电极、左夹爪和右夹爪相互配合将扁平编织铜带端面预压成近似圆形；上电极和下电极优选为钨铜合金；还包括夹持工具、PLC控制器，气缸、放线操作平台。使用本发明提供的电阻焊设备和方法，焊接时扁平编织铜带预先被压成近似圆形，然后通过电极放电进行焊接，焊接后的编织带铜丝不会损坏。同时，焊接后铜丝被焊成一体呈近似圆形，再跟圆形铜端子接头压紧后，接触电阻可忽略不计，保证了纯电动汽车的安全行驶。
Resistance welding apparatus and method for welding the ends of flat braided copper strips, comprising: a resistance welding machine, a stopper, an upper electrode, a lower electrode, a left jaw, a right jaw, an upper electrode, a lower electrode, a left jaw and The right jaws cooperate with each other to pre-press the end face of the flat braided copper strip into an approximate circle; the upper electrode and the lower electrode are preferably tungsten-copper alloy; it also includes clamping tools, PLC controllers, cylinders, and a wire-feeding operation platform. Using the resistance welding equipment and method provided by the invention, the flat braided copper strip is pre-pressed into an approximately circular shape during welding, and then welded by electrode discharge, so that the welded copper wire of the braided strip will not be damaged. At the same time, after welding, the copper wire is welded into an approximately circular shape, and after being pressed tightly with the circular copper terminal joint, the contact resistance is negligible, which ensures the safe driving of pure electric vehicles.
Description
Technical field
The present invention relates to the resistance welding technology field, particularly a kind of electric resistance welding equipment and method for soldering flat braiding copper strips end.
Background technology
At present, along with being rooted in the hearts of the people of energy-conserving and environment-protective, pure electric vehicle has entered the practical stage as the vehicles of green, yet pure electric automobile also is faced with a series of technical barrier in the process of development.Such as in the pure electric vehicle industry, in order to adapt to the specific layout structure of electric motor car, very high to cabling requirement, flat braiding copper strips has obtained extensive application, yet, also there are a lot of limitations in the interconnection technique of flat braiding copper strips and copper tip joint, and particularly the interconnection technique of flat braiding copper strips and circular copper tip joint is perplexing the industry personnel especially for a long time.
In the prior art usually way be manual with flat braiding copper strips be squeezed into circular after mechanical compaction again behind the inserted terminals endoporus, in this method of attachment, copper wire in the braiding copper strips of mechanical compaction is loose, local copper wire is easy to damage, contact resistance is larger, and bearing tension is less, is applied on the electric automobile of large electric current hidden danger very large, service time is longer, and potential safety hazard is larger.In addition, because operative employee's qualification is different, product quality is very unstable, causes production cost to increase, and can not satisfy the demand for development that electric automobile improves constantly.
If the employing resistance welding technology, 2 electrodes of present resistance welder are planar structure normally, is difficult to flat braiding copper strips is welded into circle.In addition, because resistance welding electrode need to bear HTHP, be easy to damage, the life-span, short price was high.Adopt typical electrode materials, welding times basically tens times between the hundreds of time, can not satisfy normal need of production.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of electric resistance welding equipment and method for soldering flat braiding copper strips end.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is as follows:
Be used for the electric resistance welding equipment of soldering flat braiding copper strips end, it is characterized in that, comprising: resistance welder, stop, top electrode, bottom electrode, left jaw, right jaw, wherein,
Described top electrode and bottom electrode are installed in respectively on the electrode tip holder of resistance welder;
Described left jaw and right jaw are installed in respectively on the Mobile base, between described Mobile base and the described resistance welder collets are set;
Described stop moves horizontally between described top electrode and bottom electrode, is used for limiting the position of described flat braiding copper strips end;
The upper contact-making surface of the lower contact-making surface of described top electrode, described bottom electrode is set to circular-arc;
Described top electrode can move up and down; But described left jaw and right jaw move left and right;
Described top electrode, bottom electrode, left jaw and right jaw cooperatively interact flat braiding copper strips end face are pressed into sub-circular in advance.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, described top electrode and bottom electrode are preferably tungsten-copper alloy.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, also comprise clamping device, be used for the position of fixing described flat braiding copper strips; Described clamping device has up and down two fixture blocks.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, described resistance welder is provided with platform, and described platform is provided with the transverse shifting guide rail, and described Mobile base is mobile at described transverse shifting guide rail.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, also comprise: cylinder and be used for the PLC controller of control cylinder, wherein, described cylinder comprises the first cylinder that moves be used to driving described stop, be used for driving the second cylinder that described clamping device moves, be used for driving the 3rd cylinder that described left jaw and right jaw move, be used for driving the four-cylinder that described top electrode moves.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, described the second cylinder is used for controlling movement and the folding of described clamping device fixture block for the finger cylinder; Described finger cylinder is installed on the cylinder block, and described cylinder block is mobile at described transverse shifting guide rail.
Further, at above-mentioned electric resistance welding equipment for soldering flat braiding copper strips end, also comprise the unwrapping wire operating platform.
Another aspect of the present invention also provides a kind of electric resistance welding method for soldering flat braiding copper strips end, it is characterized in that, comprises the steps:
Step 1: provide a kind of such as each described electric resistance welding equipment for soldering flat braiding copper strips end of claim 1-8;
Step 2: described stop is moved to position suitable between top electrode and the bottom electrode;
Step 3: flat braiding copper strips is passed the unwrapping wire operating platform, move forward, its end is entered between top electrode and the bottom electrode, until against stop;
Step 4: operation start button;
Step 5:PLC controller is controlled the second cylinder clamping device is moved right, and makes flat braiding copper strips be in position between two fixture blocks of clamping device, and the PLC controller is controlled two fixture blocks that the second cylinder drives clamping device and clamped flat braiding copper strips;
Step 6:PLC controller is controlled the 3rd cylinder and driven left jaw and right jaw, and is slowly close to flat braiding copper cash end, until the distance between left jaw and the right jaw is slightly larger than the width of top electrode and bottom electrode; The left and right sides, flat braiding copper cash end is clamped;
Step 7:PLC controller is controlled the first cylinder stop is retracted;
Step 8:PLC controller is controlled four-cylinder and is driven the top electrode flat braiding copper strips of compression end downwards, and flat braiding copper strips end is pressed into sub-circular in advance;
Step 9: the opening resistor welding machine, top electrode and bottom electrode discharge simultaneously, and described flat braiding copper strips end is welded into sub-circular;
Step 10:PLC controller is controlled described the first cylinder, the second cylinder, the 3rd cylinder, four-cylinder and is reset to separately original state.
Further, in above-mentioned method for soldering flat braiding copper strips end, in the described step 8, squeeze time is 280ms; In the described step 9, the resistance welder welding current is set to 20KA-44KA, and be 15ms weld interval.
Electric resistance welding equipment and method for soldering flat braiding copper strips end provided by the invention, by electrode contact surface is designed to arc, and increase left and right sides jaw, flat braiding copper strips is pressed into sub-circular in advance during welding, then weld by electrode discharge, after such solder technology processing, the braid over braid copper wire can not damage.Simultaneously, because after the resistance welded, copper wire is welded into one, flat braiding copper strips end is processed to sub-circular, and after compressing with circular copper tip joint, contact resistance can be ignored, and has guaranteed the safety traffic of pure electric automobile again.The present invention does not need the material of the welding wire of assisting and so on, and simple to operate, production efficiency is high, welding quality stable.
Description of drawings
The part schematic diagram of the electric resistance welding equipment that is used for soldering flat braiding copper strips end that Fig. 1 provides for one embodiment of the invention;
The overall schematic of the electric resistance welding equipment that is used for soldering flat braiding copper strips end that Fig. 2 provides for one embodiment of the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Figure 1 shows that a kind of electric resistance welding equipment for soldering flat braiding copper strips end that the present embodiment provides, comprise: resistance welder (Fig. 1 is not shown), stop 1, top electrode 21, bottom electrode 22, left jaw 31, right jaw 32, wherein, described top electrode and bottom electrode are installed in respectively on the electrode tip holder of resistance welder; Described left jaw and right jaw are installed in respectively on the Mobile base, between described Mobile base and the described resistance welder collets are set; Stop 1 moves horizontally between described top electrode 21 and bottom electrode 22, is used for limiting the position of described flat braiding copper strips end; The lower contact-making surface of top electrode 21, the upper contact-making surface of bottom electrode 22 are set to circular-arc; Top electrode 21 can move up and down; But left jaw 31 and right jaw 32 move left and right; Top electrode 21, bottom electrode 22, left jaw 31 and right jaw 32 cooperatively interact and flat braiding copper strips end face can be pressed into sub-circular in advance.
Top electrode in the present embodiment and bottom electrode preferably adopt tungsten-copper alloy.Electrode adopts the tungsten-copper alloy material, and the life-span is considerably beyond common welding electrode.The tungsten-copper alloy electrode combines the advantage of tungsten and copper, high temperature resistant, arc ablation resistance, intensity is high, thermal conductivity good, be easy to machining, and have high rigidity, the high-melting-point of tungsten, characteristics of anti-adhesive, be particularly suitable for using in the present invention, after being processed into arc as shown in the figure, the life-span has obtained effective guarantee.Particularly preferably, adopt the alloy material of tungsten copper trade mark w80 as electrode, when the flat braiding copper strips of 50 square millimeters of welding, can guarantee the discharge welding more than 5000 times, be not less than the plane electrode that common material is made service life.And the circular end surface that forms after the welding, easily compressed by circular copper tip joint, 50 square millimeters flat braiding copper strips and the pulling-out force of joint can reach more than the 7000N, and adopt the pulling-out force of traditional diamond-making technique (by hand flat braiding copper strips being squeezed into circular rear inserted terminals endoporus and then mechanical compaction) can only reach 5000N.
In embodiment illustrated in fig. 1, top electrode 21 and bottom electrode 22 are installed in respectively on the electrode tip holder 211,221 of resistance welder; Left jaw 31 and right jaw 32 are installed in respectively on the Mobile base 321, between described Mobile base 321 and the described resistance welder collets 5 are set.Also comprise clamping device 4, be used for the position of fixing described flat braiding copper strips; Described clamping device 4 has up and down two fixture blocks.
In above-described embodiment, also comprise: cylinder and be used for the PLC controller of control cylinder; Cylinder comprises the first cylinder that moves be used to driving described stop, is used for driving the second cylinder 41 that described clamping device moves, and is used for driving the 3rd cylinder that described left jaw and right jaw move, and is used for driving the four-cylinder that described top electrode moves.The second cylinder is used for controlling movement and the folding of described clamping device fixture block for the finger cylinder; The finger cylinder is installed on the cylinder block 411, and cylinder block is mobile at the transverse shifting guide rail.
As shown in Figure 2, the electric resistance welding equipment that is used for soldering flat braiding copper strips end that the embodiment of the invention provides also comprises resistance welder 7, and power supply is provided by resistance welder 7.Resistance welder 7 is provided with platform 71, and platform is provided with the transverse shifting guide rail, and described Mobile base is mobile at described transverse shifting guide rail.
In above-described embodiment, also comprise unwrapping wire operating platform 6.
Another aspect of the present invention provides a kind of electric resistance welding method for soldering flat braiding copper strips end, comprises the steps:
Step 1: a kind of aforesaid electric resistance welding equipment for soldering flat braiding copper strips end is provided;
Step 2: described stop is moved to position suitable between top electrode and the bottom electrode;
Step 3: flat braiding copper strips is passed the unwrapping wire operating platform, move forward, its end is entered between top electrode and the bottom electrode, until against stop;
Step 4: operation start button;
Step 5:PLC controller is controlled the second cylinder clamping device is moved right, and makes flat braiding copper strips be in position between two fixture blocks of clamping device, and the PLC controller is controlled two fixture blocks that the second cylinder drives clamping device and clamped flat braiding copper strips;
Step 6:PLC controller is controlled the 3rd cylinder and driven left jaw and right jaw, and is slowly close to flat braiding copper cash end, until the distance between left jaw and the right jaw is slightly larger than the width of top electrode and bottom electrode; The left and right sides, flat braiding copper cash end is clamped;
Step 7:PLC controller is controlled the first cylinder stop is retracted;
Step 8:PLC controller is controlled four-cylinder and is driven the top electrode flat braiding copper strips of compression end downwards, and flat braiding copper strips end is pressed into sub-circular in advance;
Step 9: the opening resistor welding machine, top electrode and bottom electrode discharge simultaneously, and described flat braiding copper strips end is welded into sub-circular;
Step 10:PLC controller is controlled described the first cylinder, the second cylinder, the 3rd cylinder, four-cylinder and is reset to separately original state.
Typically, flat braiding copper strips for 50 square millimeters, welding process is as follows: in the time of welding, operating personnel are the platform of flat braiding copper strips by unwrapping wire, move forward, front end slowly enters between the electrode, after running into stop, this moment the operation start button, the PLC controller sends signal, anchor clamps move the gas cleft hand that cylinder promotes to be configured in before the electrode and refer to that cylinder moves to the centre, set in advance according to PLC, after moving into place, weave this moment between two fixture blocks that copper strips is in Electric wire clamp (clamping device), PLC sends signal, and the Electric wire clamp on the finger cylinder (gas pawl) will weave copper cash and fix.According to delay adjustments, the cylinder at PLC control two ends drives both sides anchor clamps (jaw), to weave about copper cash and slowly clamp, (make things convenient for top electrode to press down and enter between the anchor clamps of both sides until the distance between the anchor clamps of both sides is slightly larger than the width of upper/lower electrode, cooperate bottom electrode that the flat copper band is pressed into sub-circular), at this moment stop is retracted by cylinder, electrode cylinder drives top electrode and compresses flat braiding copper strips downwards, this moment, copper strips was compressed into sub-circular, squeeze time 280ms, the upper/lower electrode discharge, and apply electric current, and size of current is 20KA～44KA, be 15ms action time, resistance heat effect that the contact-making surface of braiding copper cash produces is melted to default shape with it to utilize electric current to flow through, and keeps 30ms.Then top electrode cylinder, both sides drive the cylinder that jaw moves, the cylinder that jaw finger cylinder (the second cylinder) and drive cylinder block move, limiting cylinder (the first cylinder), the 3rd cylinder of controlling left jaw and right jaw can be reset to original state successively, take out the good braid over braid of welding, can carry out next time cycling.
On the whole, the present invention mainly is comprised of resistance welder and automatic fixture anchor clamps.Resistance welder mainly provides and arranges the electric current of the required use of welding, and the automatic fixture anchor clamps are assisted and finished whole welding operation.The automatic fixture anchor clamps are mainly by stop, two electrodes up and down, about two jaws, clamping device (Electric wire clamp), the unwrapping wire platform, power executive component cylinder and electric controling element PLC form.Stop links to each other with cylinder, can realize moving forward and backward of stop.Electrode up and down symmetry is installed on the electrode and connects power supply, and the electrode seat that powers on links to each other with cylinder and realizes moving up and down.Two jaw left-right symmetry are installed on two Mobile bases, fix by collets and fuselage on two Mobile bases, have avoided electrode by Mobile base and fuselage short circuit.Mobile base is finally realized the move left and right of jaw by mobile at line slideway with cylinder.Electric wire clamp is installed in the gas cleft hand and refers on the cylinder, and the gas cleft hand refers to that cylinder is installed on the cylinder block, and cylinder block is subjected to corresponding air cylinder driven move left and right on line slideway, finally realize move left and right and the opening and closing (the gas cleft hand refers to cylinder) of Electric wire clamp.Be provided with the unwrapping wire operating platform in automatic fixture anchor clamps dead ahead.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. an electric resistance welding equipment that is used for soldering flat braiding copper strips end is characterized in that, comprising: resistance welder, and stop, top electrode, bottom electrode, left jaw, right jaw, wherein,
Described top electrode and bottom electrode are installed in respectively on the electrode tip holder of resistance welder;
Described left jaw and right jaw are installed in respectively on the Mobile base, between described Mobile base and the described resistance welder collets are set;
Described stop moves horizontally between described top electrode and bottom electrode, is used for limiting the position of described flat braiding copper strips end;
The upper contact-making surface of the lower contact-making surface of described top electrode, described bottom electrode is set to circular-arc;
Described top electrode can move up and down; But described left jaw and right jaw move left and right;
Described top electrode, bottom electrode, left jaw and right jaw cooperatively interact flat braiding copper strips end face are pressed into sub-circular in advance.
2. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 1 is characterized in that, described top electrode and bottom electrode are tungsten-copper alloy.
3. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 2 is characterized in that, also comprises clamping device, is used for the position of fixing described flat braiding copper strips; Described clamping device has up and down two fixture blocks.
4. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 3 is characterized in that, described resistance welder is provided with platform, and described platform is provided with the transverse shifting guide rail, and described Mobile base is mobile at described transverse shifting guide rail.
5. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 4, it is characterized in that, also comprise: cylinder and be used for the PLC controller of control cylinder, wherein, described cylinder comprises the first cylinder that moves be used to driving described stop, be used for driving the second cylinder that described clamping device moves, be used for driving the 3rd cylinder that described left jaw and right jaw move, be used for driving the four-cylinder that described top electrode moves.
6. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 5 is characterized in that, described the second cylinder is used for controlling movement and the folding of described clamping device fixture block for the finger cylinder; Described finger cylinder is installed on the cylinder block, and described cylinder block is mobile at described transverse shifting guide rail.
7. the electric resistance welding equipment for soldering flat braiding copper strips end according to claim 6 is characterized in that, also comprises the unwrapping wire operating platform.
8. an electric resistance welding method that is used for soldering flat braiding copper strips end is characterized in that, comprises the steps:
Step 1: provide a kind of such as each described electric resistance welding equipment for soldering flat braiding copper strips end of claim 1-8;
Step 2: described stop is moved to position suitable between top electrode and the bottom electrode;
Step 3: flat braiding copper strips is passed the unwrapping wire operating platform, move forward, its end is entered between top electrode and the bottom electrode, until against stop;
Step 4: operation start button;
Step 5:PLC controller is controlled the second cylinder clamping device is moved right, and makes flat braiding copper strips be in position between two fixture blocks of clamping device, and the PLC controller is controlled two fixture blocks that the second cylinder drives clamping device and clamped flat braiding copper strips;
Step 6:PLC controller is controlled the 3rd cylinder and driven left jaw and right jaw, and is slowly close to flat braiding copper cash end, until the distance between left jaw and the right jaw is slightly larger than the width of top electrode and bottom electrode; The left and right sides, flat braiding copper cash end is clamped;
Step 7:PLC controller is controlled the first cylinder stop is retracted;
Step 8:PLC controller is controlled four-cylinder and is driven the top electrode flat braiding copper strips of compression end downwards, and flat braiding copper strips end is pressed into sub-circular in advance;
Step 9: the opening resistor welding machine, top electrode and bottom electrode discharge simultaneously, and described flat braiding copper strips end is welded into sub-circular;
Step 10:PLC controller is controlled described the first cylinder, the second cylinder, the 3rd cylinder, four-cylinder and is reset to separately original state.
9. the method for soldering flat braiding copper strips end according to claim 8 is characterized in that, in the described step 8, squeeze time is 280ms; In the described step 9, the resistance welder welding current is set to 20KA to 44KA, and be 15ms weld interval.
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| CN103831522A (en) * | 2014-03-26 | 2014-06-04 | 中国工程物理研究院机械制造工艺研究所 | Small-diameter pipe extrusion and soldering sealing device |
| CN103831522B (en) * | 2014-03-26 | 2016-01-20 | 中国工程物理研究院机械制造工艺研究所 | A kind of small diameter tube extruding solder sealer |
| CN103831519B (en) * | 2014-03-26 | 2016-02-17 | 中国工程物理研究院机械制造工艺研究所 | A kind of small diameter tube extruding sealing actuating unit with pressure balance function |
| CN105312757A (en) * | 2014-06-24 | 2016-02-10 | 深圳市鹏煜威科技有限公司 | Electrode leveling mechanism and electrode component |
| CN104816081A (en) * | 2015-03-23 | 2015-08-05 | 乐清野岛机电有限公司 | Machining device of large-capacity circuit breaker contact system |
| CN104816081B (en) * | 2015-03-23 | 2017-01-11 | 乐清野岛机电有限公司 | Machining device of large-capacity circuit breaker contact system |
| CN107199392A (en) * | 2017-06-12 | 2017-09-26 | 颍上北方动力新能源有限公司 | A kind of multi-electrode rod-type mash welder |
| CN109514063A (en) * | 2018-12-30 | 2019-03-26 | 苏州阿福机器人有限公司 | A kind of motor winding welding technique |
| CN109623077A (en) * | 2019-01-20 | 2019-04-16 | 巨力自动化设备（浙江）有限公司 | Solder welding mechanism |
| CN110170726A (en) * | 2019-05-21 | 2019-08-27 | 上海航天设备制造总厂有限公司 | A kind of resistance welding method that space is connect with ultra-thin layers of copper with silver-plated braiding copper strips |
| CN111185657A (en) * | 2020-01-14 | 2020-05-22 | 西华大学 | Cladding tube electrode and preparation method thereof |
| CN111375878A (en) * | 2020-04-26 | 2020-07-07 | 宁波精成电机有限公司 | Welding electrode structure |
| CN112355455A (en) * | 2020-10-14 | 2021-02-12 | 江门市亿高电器有限公司 | Resistance welder for automatically rolling plate |
| CN112296547A (en) * | 2020-11-03 | 2021-02-02 | 重庆长江电工工业集团有限公司 | Bullet box sheet welding device and bullet box sheet welding method |
| CN112828435A (en) * | 2021-01-27 | 2021-05-25 | 宁波塞纳电热科技有限公司 | Wire welding tool and working method thereof |
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